Calculation of the Sound Attenuation by a Noise Barrier in Homogeneous Conditions

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F14%3A00219875" target="_blank" >RIV/68407700:21110/14:00219875 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Calculation of the Sound Attenuation by a Noise Barrier in Homogeneous Conditions
Original language description
The purpose of this paper is to present an algorithm for the calculation of the sound attenuation caused by a thin straight noise barrier in homogeneous conditions of sound propagation. The development of the algorithm was done with the boundary elementmethod (the BEM) and the least squares method. The BEM was used to obtain the data, i.e. to calculate the sound attenuation by a noise barrier in different situations. The curve fitting was processed in Matlab with the tool for non-linear curve fitting tasks in the least square sense. The curve fitting was done for 1/1 octave band centre frequencies usually considered in the road traffic noise. The new algorithm was compared with commonly used engineering methods (NMPB-Routes-1996, formula of Kurze & Anderson and Deygout's method). The values of the sound attenuation estimated by the presented algorithm are except low frequencies lower than the values calculated by Deygout and higher than the values calculated by NMPB-Routes-1996 and Ku
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BI - Acoustics and oscillation
OECD FORD branch
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Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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